Here's a gross weapon straight out of Wonder Woman: Dead Earth
Weapon, legendary (requires attunement by good alignment)
This horrific and powerful weapon was made by Wonder Woman centuries in the future after a nuclear war with the Amazon's left the Earth a nuclear wasteland. Created to defeat her mutated sisters, the Spine is the actually spinal column and skull of Kal-El, ripped from his corpse and combined with the Lasso of Hestia. The combination of Kryptonian physiology and magic from Wonder Woman's lasso make it a devastatingly powerful tool of vengeance and justice.
You gain a +3 to attack and damage rolls made with this magic weapon. When you hit with an attack using the Spine, the target takes and additional 2d6 force damage. Damage dealt by the Spine ignores resistance to weapons and bludgeon damage.